"The problem with C++ is all the bending backwards they do to keep old code compiling and working"
Uh, that's not a problem, it's (as you say) the main reason people use it and why they burn out on flavor of the day languages like Rust and Go (as the OP illustrates).
This is funny, because with Rust you can almost certainly compile code from Rust 1.0, unless it was relying on a soundness bug. You can also seamlessly use dependencies that use newer editions of Rust; you don't have to adjust your code to do this.
>Even if you add the recent additions, it is still less stuff than Rust already has. For instance, async.
C++ has been trying to add generators and async functions (`co_yield` and `co_await`) for a while now. I'm almost certain they had started being discussed and were even available as preview features in some C++ compilers before Rust started implementing them.
